899478901 has 2 divisors, whose sum is σ = 899478902. Its totient is φ = 899478900.

The previous prime is 899478889. The next prime is 899478913. The reversal of 899478901 is 109874998.

It is a balanced prime because it is at equal distance from previous prime (899478889) and next prime (899478913).

It can be written as a sum of positive squares in only one way, i.e., 598976676 + 300502225 = 24474^2 + 17335^2 .

It is a cyclic number.

It is not a de Polignac number, because 899478901 - 2¹⁵ = 899446133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (899478961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449739450 + 449739451.

It is an arithmetic number, because the mean of its divisors is an integer number (449739451).

Almost surely, 2^899478901 is an apocalyptic number.

It is an amenable number.

899478901 is a deficient number, since it is larger than the sum of its proper divisors (1).

899478901 is an equidigital number, since it uses as much as digits as its factorization.

899478901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The square root of 899478901 is about 29991.3137591537. The cubic root of 899478901 is about 965.3030095370.

The spelling of 899478901 in words is "eight hundred ninety-nine million, four hundred seventy-eight thousand, nine hundred one".